Difference between revisions of "C2-Outdoor"
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<span style="color:#000B80"> why almost equal distribution? What effect?</span> | <span style="color:#000B80"> why almost equal distribution? What effect?</span> | ||
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| + | ==⌘ETSI urban pedestrian == | ||
| + | * Outdoor to indoor and pedestrian test environment, based on Non LOS (NLOS) | ||
| + | * Base stations with low antenna height are located outdoors, pedestrian users are located on streets and inside buildings and residences | ||
| + | * TX power is 14 dBm, ''f = 2000 Unik/MHz'' and ''r'' is distance in m | ||
| + | * Assumes average building penetration loss of 12 dB | ||
| + | * Path loss model: <math>L_{pedest}=40 \log{r} + 30 \log{f} + 49 </math> [dB] | ||
| + | |||
| + | ==⌘COST Walfish-Ikegami Model == | ||
| + | * taking into consideration propagation over roof tops | ||
| + | * assumes antennas below roof top | ||
| + | * Path loss model: <math>L_{roof top}=45 \log{(r+20)} + 24 </math> [dB] | ||
| + | |||
| + | ==⌘Alternative Street Microcell Path-loss== | ||
| + | * Outdoor propagation, consists of "adding of paths" | ||
| + | * ''c'' is angle of street crossing. ''c = 0.5'' for 90 deg crossing | ||
| + | * k_0 = 1 and d_0 = 0 | ||
| + | |||
| + | * Path loss model: <math> L_{micro}=20 \log{\frac{4\pi d_n}{\lambda}} </math> [dB] | ||
| + | * illusory distance <math>d_n=k_n s_{n-1}+d_{n-1} </math> with <math>k_n=k_{n-1} + d_{n-1} c </math> | ||
| + | ==⌘ETSI vehicular == | ||
| + | * larger cells (typical few km) | ||
| + | * TX power 24 dBm for mobile phone, transmit antenna height <math>\Delta h</math> over roof top (typical 15 m), distance ''r'' in km, ''f = 2000 Unik/MHz'' | ||
| + | * Path loss model: <math>L_{vehicular}=40(1-4\cdot 10^{-3}\Delta h) \log{r} - 18 \log{\Delta h} + 21 \log{f} + 80 </math> [dB] | ||
Revision as of 21:00, 20 September 2014
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Contents
⌘Measurements in rural farmland
- Typical IR from Farm_1, 1718 Unik/MHz. Total received power was –84 dBm, 20 dB above GSM sensitivity level
(Source:R Rækken, G. Løvnes, Telektronikk)
These questions are valid for all of the following impulse responses
- from delay, calculate reflection factor and free space attenuation
- describe characteristics of reflection
⌘ Measurements in rural farmland
- Typical IR from Farm_2, 953MHz. Total received power was <93dBm
(Source:R Rækken, G. Løvnes, Telektronikk)
⌘Measurements in cities
- Typical IR from City street measurements, 1950 Unik/MHz, Oslo. Output power 25 dBm ( in mW?). Omnidirectional
-Dipoles used as transmit and receive antennas.
(Source:R Rækken, G. Løvnes, Telektronikk)
why almost equal distribution? What effect?
⌘ETSI urban pedestrian
- Outdoor to indoor and pedestrian test environment, based on Non LOS (NLOS)
- Base stations with low antenna height are located outdoors, pedestrian users are located on streets and inside buildings and residences
- TX power is 14 dBm, f = 2000 Unik/MHz and r is distance in m
- Assumes average building penetration loss of 12 dB
- Path loss model:
[dB]
⌘COST Walfish-Ikegami Model
- taking into consideration propagation over roof tops
- assumes antennas below roof top
- Path loss model:
[dB]
⌘Alternative Street Microcell Path-loss
- Outdoor propagation, consists of "adding of paths"
- c is angle of street crossing. c = 0.5 for 90 deg crossing
- k_0 = 1 and d_0 = 0
- Path loss model:
[dB]
- illusory distance
with
⌘ETSI vehicular
- larger cells (typical few km)
- TX power 24 dBm for mobile phone, transmit antenna height
over roof top (typical 15 m), distance r in km, f = 2000 Unik/MHz
- Path loss model:
[dB]
